drivers/mfd/da9055-core.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Device access for Dialog DA9055 PMICs.
   4  *
   5  * Copyright(c) 2012 Dialog Semiconductor Ltd.
   6  *
   7  * Author: David Dajun Chen <dchen@diasemi.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/device.h>
  12 #include <linux/input.h>
  13 #include <linux/irq.h>
  14 #include <linux/mutex.h>
  15
  16 #include <linux/mfd/core.h>
  17 #include <linux/mfd/da9055/core.h>
  18 #include <linux/mfd/da9055/pdata.h>
  19 #include <linux/mfd/da9055/reg.h>
  20
  21 #define DA9055_IRQ_NONKEY_MASK          0x01
  22 #define DA9055_IRQ_ALM_MASK             0x02
  23 #define DA9055_IRQ_TICK_MASK            0x04
  24 #define DA9055_IRQ_ADC_MASK             0x08
  25 #define DA9055_IRQ_BUCK_ILIM_MASK       0x08
  26
  27 static bool da9055_register_readable(struct device *dev, unsigned int reg)
  28 {
  29         switch (reg) {
  30         case DA9055_REG_STATUS_A:
  31         case DA9055_REG_STATUS_B:
  32         case DA9055_REG_EVENT_A:
  33         case DA9055_REG_EVENT_B:
  34         case DA9055_REG_EVENT_C:
  35         case DA9055_REG_IRQ_MASK_A:
  36         case DA9055_REG_IRQ_MASK_B:
  37         case DA9055_REG_IRQ_MASK_C:
  38
  39         case DA9055_REG_CONTROL_A:
  40         case DA9055_REG_CONTROL_B:
  41         case DA9055_REG_CONTROL_C:
  42         case DA9055_REG_CONTROL_D:
  43         case DA9055_REG_CONTROL_E:
  44
  45         case DA9055_REG_ADC_MAN:
  46         case DA9055_REG_ADC_CONT:
  47         case DA9055_REG_VSYS_MON:
  48         case DA9055_REG_ADC_RES_L:
  49         case DA9055_REG_ADC_RES_H:
  50         case DA9055_REG_VSYS_RES:
  51         case DA9055_REG_ADCIN1_RES:
  52         case DA9055_REG_ADCIN2_RES:
  53         case DA9055_REG_ADCIN3_RES:
  54
  55         case DA9055_REG_COUNT_S:
  56         case DA9055_REG_COUNT_MI:
  57         case DA9055_REG_COUNT_H:
  58         case DA9055_REG_COUNT_D:
  59         case DA9055_REG_COUNT_MO:
  60         case DA9055_REG_COUNT_Y:
  61         case DA9055_REG_ALARM_H:
  62         case DA9055_REG_ALARM_D:
  63         case DA9055_REG_ALARM_MI:
  64         case DA9055_REG_ALARM_MO:
  65         case DA9055_REG_ALARM_Y:
  66
  67         case DA9055_REG_GPIO0_1:
  68         case DA9055_REG_GPIO2:
  69         case DA9055_REG_GPIO_MODE0_2:
  70
  71         case DA9055_REG_BCORE_CONT:
  72         case DA9055_REG_BMEM_CONT:
  73         case DA9055_REG_LDO1_CONT:
  74         case DA9055_REG_LDO2_CONT:
  75         case DA9055_REG_LDO3_CONT:
  76         case DA9055_REG_LDO4_CONT:
  77         case DA9055_REG_LDO5_CONT:
  78         case DA9055_REG_LDO6_CONT:
  79         case DA9055_REG_BUCK_LIM:
  80         case DA9055_REG_BCORE_MODE:
  81         case DA9055_REG_VBCORE_A:
  82         case DA9055_REG_VBMEM_A:
  83         case DA9055_REG_VLDO1_A:
  84         case DA9055_REG_VLDO2_A:
  85         case DA9055_REG_VLDO3_A:
  86         case DA9055_REG_VLDO4_A:
  87         case DA9055_REG_VLDO5_A:
  88         case DA9055_REG_VLDO6_A:
  89         case DA9055_REG_VBCORE_B:
  90         case DA9055_REG_VBMEM_B:
  91         case DA9055_REG_VLDO1_B:
  92         case DA9055_REG_VLDO2_B:
  93         case DA9055_REG_VLDO3_B:
  94         case DA9055_REG_VLDO4_B:
  95         case DA9055_REG_VLDO5_B:
  96         case DA9055_REG_VLDO6_B:
  97                 return true;
  98         default:
  99                 return false;
 100         }
 101 }
 102
 103 static bool da9055_register_writeable(struct device *dev, unsigned int reg)
 104 {
 105         switch (reg) {
 106         case DA9055_REG_STATUS_A:
 107         case DA9055_REG_STATUS_B:
 108         case DA9055_REG_EVENT_A:
 109         case DA9055_REG_EVENT_B:
 110         case DA9055_REG_EVENT_C:
 111         case DA9055_REG_IRQ_MASK_A:
 112         case DA9055_REG_IRQ_MASK_B:
 113         case DA9055_REG_IRQ_MASK_C:
 114
 115         case DA9055_REG_CONTROL_A:
 116         case DA9055_REG_CONTROL_B:
 117         case DA9055_REG_CONTROL_C:
 118         case DA9055_REG_CONTROL_D:
 119         case DA9055_REG_CONTROL_E:
 120
 121         case DA9055_REG_ADC_MAN:
 122         case DA9055_REG_ADC_CONT:
 123         case DA9055_REG_VSYS_MON:
 124         case DA9055_REG_ADC_RES_L:
 125         case DA9055_REG_ADC_RES_H:
 126         case DA9055_REG_VSYS_RES:
 127         case DA9055_REG_ADCIN1_RES:
 128         case DA9055_REG_ADCIN2_RES:
 129         case DA9055_REG_ADCIN3_RES:
 130
 131         case DA9055_REG_COUNT_S:
 132         case DA9055_REG_COUNT_MI:
 133         case DA9055_REG_COUNT_H:
 134         case DA9055_REG_COUNT_D:
 135         case DA9055_REG_COUNT_MO:
 136         case DA9055_REG_COUNT_Y:
 137         case DA9055_REG_ALARM_H:
 138         case DA9055_REG_ALARM_D:
 139         case DA9055_REG_ALARM_MI:
 140         case DA9055_REG_ALARM_MO:
 141         case DA9055_REG_ALARM_Y:
 142
 143         case DA9055_REG_GPIO0_1:
 144         case DA9055_REG_GPIO2:
 145         case DA9055_REG_GPIO_MODE0_2:
 146
 147         case DA9055_REG_BCORE_CONT:
 148         case DA9055_REG_BMEM_CONT:
 149         case DA9055_REG_LDO1_CONT:
 150         case DA9055_REG_LDO2_CONT:
 151         case DA9055_REG_LDO3_CONT:
 152         case DA9055_REG_LDO4_CONT:
 153         case DA9055_REG_LDO5_CONT:
 154         case DA9055_REG_LDO6_CONT:
 155         case DA9055_REG_BUCK_LIM:
 156         case DA9055_REG_BCORE_MODE:
 157         case DA9055_REG_VBCORE_A:
 158         case DA9055_REG_VBMEM_A:
 159         case DA9055_REG_VLDO1_A:
 160         case DA9055_REG_VLDO2_A:
 161         case DA9055_REG_VLDO3_A:
 162         case DA9055_REG_VLDO4_A:
 163         case DA9055_REG_VLDO5_A:
 164         case DA9055_REG_VLDO6_A:
 165         case DA9055_REG_VBCORE_B:
 166         case DA9055_REG_VBMEM_B:
 167         case DA9055_REG_VLDO1_B:
 168         case DA9055_REG_VLDO2_B:
 169         case DA9055_REG_VLDO3_B:
 170         case DA9055_REG_VLDO4_B:
 171         case DA9055_REG_VLDO5_B:
 172         case DA9055_REG_VLDO6_B:
 173                 return true;
 174         default:
 175                 return false;
 176         }
 177 }
 178
 179 static bool da9055_register_volatile(struct device *dev, unsigned int reg)
 180 {
 181         switch (reg) {
 182         case DA9055_REG_STATUS_A:
 183         case DA9055_REG_STATUS_B:
 184         case DA9055_REG_EVENT_A:
 185         case DA9055_REG_EVENT_B:
 186         case DA9055_REG_EVENT_C:
 187
 188         case DA9055_REG_CONTROL_A:
 189         case DA9055_REG_CONTROL_E:
 190
 191         case DA9055_REG_ADC_MAN:
 192         case DA9055_REG_ADC_RES_L:
 193         case DA9055_REG_ADC_RES_H:
 194         case DA9055_REG_VSYS_RES:
 195         case DA9055_REG_ADCIN1_RES:
 196         case DA9055_REG_ADCIN2_RES:
 197         case DA9055_REG_ADCIN3_RES:
 198
 199         case DA9055_REG_COUNT_S:
 200         case DA9055_REG_COUNT_MI:
 201         case DA9055_REG_COUNT_H:
 202         case DA9055_REG_COUNT_D:
 203         case DA9055_REG_COUNT_MO:
 204         case DA9055_REG_COUNT_Y:
 205         case DA9055_REG_ALARM_MI:
 206
 207         case DA9055_REG_BCORE_CONT:
 208         case DA9055_REG_BMEM_CONT:
 209         case DA9055_REG_LDO1_CONT:
 210         case DA9055_REG_LDO2_CONT:
 211         case DA9055_REG_LDO3_CONT:
 212         case DA9055_REG_LDO4_CONT:
 213         case DA9055_REG_LDO5_CONT:
 214         case DA9055_REG_LDO6_CONT:
 215                 return true;
 216         default:
 217                 return false;
 218         }
 219 }
 220
 221 static const struct regmap_irq da9055_irqs[] = {
 222         [DA9055_IRQ_NONKEY] = {
 223                 .reg_offset = 0,
 224                 .mask = DA9055_IRQ_NONKEY_MASK,
 225         },
 226         [DA9055_IRQ_ALARM] = {
 227                 .reg_offset = 0,
 228                 .mask = DA9055_IRQ_ALM_MASK,
 229         },
 230         [DA9055_IRQ_TICK] = {
 231                 .reg_offset = 0,
 232                 .mask = DA9055_IRQ_TICK_MASK,
 233         },
 234         [DA9055_IRQ_HWMON] = {
 235                 .reg_offset = 0,
 236                 .mask = DA9055_IRQ_ADC_MASK,
 237         },
 238         [DA9055_IRQ_REGULATOR] = {
 239                 .reg_offset = 1,
 240                 .mask = DA9055_IRQ_BUCK_ILIM_MASK,
 241         },
 242 };
 243
 244 const struct regmap_config da9055_regmap_config = {
 245         .reg_bits = 8,
 246         .val_bits = 8,
 247
 248         .cache_type = REGCACHE_MAPLE,
 249
 250         .max_register = DA9055_MAX_REGISTER_CNT,
 251         .readable_reg = da9055_register_readable,
 252         .writeable_reg = da9055_register_writeable,
 253         .volatile_reg = da9055_register_volatile,
 254 };
 255 EXPORT_SYMBOL_GPL(da9055_regmap_config);
 256
 257 static const struct resource da9055_onkey_resource =
 258         DEFINE_RES_IRQ_NAMED(DA9055_IRQ_NONKEY, "ONKEY");
 259
 260 static const struct resource da9055_rtc_resource[] = {
 261         DEFINE_RES_IRQ_NAMED(DA9055_IRQ_ALARM, "ALM"),
 262         DEFINE_RES_IRQ_NAMED(DA9055_IRQ_TICK, "TICK"),
 263 };
 264
 265 static const struct resource da9055_hwmon_resource =
 266         DEFINE_RES_IRQ_NAMED(DA9055_IRQ_HWMON, "HWMON");
 267
 268 static const struct resource da9055_ld05_6_resource =
 269         DEFINE_RES_IRQ_NAMED(DA9055_IRQ_REGULATOR, "REGULATOR");
 270
 271 static const struct mfd_cell da9055_devs[] = {
 272         {
 273                 .of_compatible = "dlg,da9055-gpio",
 274                 .name = "da9055-gpio",
 275         },
 276         {
 277                 .of_compatible = "dlg,da9055-regulator",
 278                 .name = "da9055-regulator",
 279                 .id = 1,
 280         },
 281         {
 282                 .of_compatible = "dlg,da9055-regulator",
 283                 .name = "da9055-regulator",
 284                 .id = 2,
 285         },
 286         {
 287                 .of_compatible = "dlg,da9055-regulator",
 288                 .name = "da9055-regulator",
 289                 .id = 3,
 290         },
 291         {
 292                 .of_compatible = "dlg,da9055-regulator",
 293                 .name = "da9055-regulator",
 294                 .id = 4,
 295         },
 296         {
 297                 .of_compatible = "dlg,da9055-regulator",
 298                 .name = "da9055-regulator",
 299                 .id = 5,
 300         },
 301         {
 302                 .of_compatible = "dlg,da9055-regulator",
 303                 .name = "da9055-regulator",
 304                 .id = 6,
 305         },
 306         {
 307                 .of_compatible = "dlg,da9055-regulator",
 308                 .name = "da9055-regulator",
 309                 .id = 7,
 310                 .resources = &da9055_ld05_6_resource,
 311                 .num_resources = 1,
 312         },
 313         {
 314                 .of_compatible = "dlg,da9055-regulator",
 315                 .name = "da9055-regulator",
 316                 .resources = &da9055_ld05_6_resource,
 317                 .num_resources = 1,
 318                 .id = 8,
 319         },
 320         {
 321                 .of_compatible = "dlg,da9055-onkey",
 322                 .name = "da9055-onkey",
 323                 .resources = &da9055_onkey_resource,
 324                 .num_resources = 1,
 325         },
 326         {
 327                 .of_compatible = "dlg,da9055-rtc",
 328                 .name = "da9055-rtc",
 329                 .resources = da9055_rtc_resource,
 330                 .num_resources = ARRAY_SIZE(da9055_rtc_resource),
 331         },
 332         {
 333                 .of_compatible = "dlg,da9055-hwmon",
 334                 .name = "da9055-hwmon",
 335                 .resources = &da9055_hwmon_resource,
 336                 .num_resources = 1,
 337         },
 338         {
 339                 .of_compatible = "dlg,da9055-watchdog",
 340                 .name = "da9055-watchdog",
 341         },
 342 };
 343
 344 static const struct regmap_irq_chip da9055_regmap_irq_chip = {
 345         .name = "da9055_irq",
 346         .status_base = DA9055_REG_EVENT_A,
 347         .mask_base = DA9055_REG_IRQ_MASK_A,
 348         .ack_base = DA9055_REG_EVENT_A,
 349         .num_regs = 3,
 350         .irqs = da9055_irqs,
 351         .num_irqs = ARRAY_SIZE(da9055_irqs),
 352 };
 353
 354 int da9055_device_init(struct da9055 *da9055)
 355 {
 356         struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
 357         int ret;
 358         uint8_t clear_events[3] = {0xFF, 0xFF, 0xFF};
 359
 360         if (pdata && pdata->init != NULL)
 361                 pdata->init(da9055);
 362
 363         if (!pdata || !pdata->irq_base)
 364                 da9055->irq_base = -1;
 365         else
 366                 da9055->irq_base = pdata->irq_base;
 367
 368         ret = da9055_group_write(da9055, DA9055_REG_EVENT_A, 3, clear_events);
 369         if (ret < 0)
 370                 return ret;
 371
 372         ret = regmap_add_irq_chip(da9055->regmap, da9055->chip_irq,
 373                                   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 374                                   da9055->irq_base, &da9055_regmap_irq_chip,
 375                                   &da9055->irq_data);
 376         if (ret < 0)
 377                 return ret;
 378
 379         da9055->irq_base = regmap_irq_chip_get_base(da9055->irq_data);
 380
 381         ret = mfd_add_devices(da9055->dev, -1,
 382                               da9055_devs, ARRAY_SIZE(da9055_devs),
 383                               NULL, da9055->irq_base, NULL);
 384         if (ret)
 385                 goto err;
 386
 387         return 0;
 388
 389 err:
 390         mfd_remove_devices(da9055->dev);
 391         return ret;
 392 }
 393
 394 void da9055_device_exit(struct da9055 *da9055)
 395 {
 396         regmap_del_irq_chip(da9055->chip_irq, da9055->irq_data);
 397         mfd_remove_devices(da9055->dev);
 398 }
 399
 400 MODULE_DESCRIPTION("Core support for the DA9055 PMIC");
 401 MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");